Snapping roll



H. F GRITZMACHER.

SNAPPING ROLP. APPLICATION FILED MAR I5, 1922.

1,4 21%; a e ly 4, 1 22.

STATEfi SNAPPING ROLL.

Application filed March 15, 1922.

To all whom it may concern:

Be it known that I, HENRY F. GRITZ- MAGHER, a citizen of the UnitedStates, residin at Le Sueur, in the county of Sibley and tate ofMinnesota, have invented cer tain new and useful Improvements inSnapping Rolls, of which the following is a specification.

This invention relates to snapping rolls for use in corn husking andshredding machines; and it consists in providing the rolls with pocketsand grooves as hereinafter fully described and claimed.

In the drawings, Figure 1 is a plan view of a portion of a snapping rollconstructed according to this invention. Fig. 2 is a cross-sectionthrough a pair of rolls, taken on the line 22 in Fig. 1.

The rolls at used in carrying out this invention are both alike, and aredriven simultaneously in opposite directions as indicated by the curvedarrows in Fig. 2. This may be accomplished in any approved way, and eachroll may have a toothed pinion 5 secured to it which gears into asimilar pinion on the other roll. The rolls are journaled in a frame ina similar manner to those shown in the patent issued to Henry L. Fer rison October 6, 1903, No. 740,637, and are pressed towards each other bysuitable springs.

In order to remove the cobs from the stalks in a more satisfactorymanner than heretofore, each roll is provided with a series of pocketsspaced apart around its periphery, and arranged in straight rowslongitudinally. The bottom 8 of each pocket is fiat, and is a-segment ofa circle in shape, and is arranged tangentially of a circle 9 drawnconcentric with the roll and substantially one-half of it in diameter.

The side portion 10 of the pocket is arcuate or curved in shape tocorrespond with the arc of the bottom 8, and its middle part is arrangedat substantially an angle of 110 with the bottom 8.

Longitudinal concave grooves 12 are formed in the periphery of the roll,cross- Specification of Letters Patent.

Patented July 4, 1922.

Serial No. 543,944.

wise of each row of pockets, and the end portions of these grooves aretapered between the last two pockets at each end of the rolls, so thatthe end portions of the pair of rolls have no grooves in them, and runsmoothly when pressed together.

These longitudinal grooves make it easier to feed the corn between therolls, and enable the rolls to catch the stalks better when the stalksare dry, and at the same time they do not shell the corn.

The pockets in the rolls are arranged so that they run directly oppositeto each other in pairs, and when formed as hereinbefore described arefound to be very effective in snapping the cobs from the stalks. Thepockets of each row are preferably arranged in staggered relation to thepockets of the rows adjacent to it.

lVhat I claim is:

1. A snapping roll provided with a series of pockets in its periphery,each pocket having a fiat segment-shaped bottom arranged tangentially ofa circle formed concentric.

with the roll and substantially one-half of it in diameter, and having acurved side portion which corresponds in curvature with the arc of thesegment-shaped bottom and which has its middle part arranged at anobtuse angle to the said flat bottom.

2. A snapping roll provided with a series of pockets in its periphery,each pocket having a flat segment-shaped bottom arranged tangentially ofa circle formed concentric with the roll and substantially one half ofit in diameter, and having a curved side portion which corresponds incurvature with the arc of the segment-shaped bottom and which has itsmiddle part arranged at an obtuse angle to the said fiat bottom, thesaid pockets being arranged in rows longitudinally. and the said rollbeing provided with longitud'inal concave grooves extending crosswiseof'and between the curved side portions of the said pockets. I

In testimony whereof I have aflixed my signature.

HENRY F. GRITZMAOHER.

